Frankfort



Dec. 6, 1949 H. FRANKFORT TIME CARD CALCULATOR 2 Sheets-Sheet 1 FiledOct. 14, 1948 flermarz INVENTOR ATTORNEYS 1949 H. FRANKFORT 2,490,425

TIME CARD CALCULATOR Filed 0st. 14, 1948 2 Sheets-Sheet 2 jleflmarzfiarzk/brt INVENTOR I 'll ATTORNEYS Patented Dec. 6, 1949 UNITED STATESPATENT OFFICE TIMEGARD CALCULATOR Herman- Frankfort, Brooklyn, N. Y.

Application October 14, 1948, Serial No. 54,520

4 Claims. 1-, This invention relates to improvements in time cardcalculators.

An object of. the invention is to: provide an. intproved form andconstruction of a. time cardv calculator which employs a fixed timeindicia. bearing strip representing the hours on aclock, hereinaftertermed a fixed clock strip, and a cooperating endless time calculatingstrip disposed upon supporting rollers for movement.

directly below said fixed clock. strip,,whereby the net elapsed payabletime of a workman. may be instantly and accurately determined andindicated.

Anotherobject of: the invention is to provide an improved time card;calculator which will simultaneously compute the time that a workmanputs in during any portion of a twenty four hour period, and subtracthis time-out periods for lunch and rest periods, indicating the netelapsed payable time, all of which can be done by merely turning. anoperating knob and without having to employ the services of a book.-keeper or accountant.

A further object of the invention is to provide an improved form of timecard calculator which will be highly eflicient in operation, andrelatively inexpensive to manufacture and produce.

Other objects will appear as the description proceeds.

In the accompanying drawings which form a part of this application:

Figure 1 is a perspective view of the improved time card calculator.

Fig. 2 is a transverse sectional view through the improved time cardcalculator.

Fig. 3 is a partial sectional view taken on line 33 of Fig. 2.

Fig. 4 is a side elevation, partly broken away and in section of one ofthe endless time calculating strip supporting rollers.

Fig. 5 is a sectional view taken on the line 5-5 of Fig. 3. Fig. 6 is anenlarged detail view of portions of the fixed clock strip andcooperating endless time calculating strip illustrating the computationof a net payable time problem.

Like characters of reference are used throughout the followingspecification and the accompanying drawings to designate correspondingparts.

In carrying out the invention, there is shown and provided an improvedform and construction of a time card calculator including an elongatedsolid supporting base I of substantially triangular shape in crosssection. The bottom 2 of the base i will be the longest of its threesides, and the back 3 of the base I will extend vertically at rightangles to the bottom 2 at its rear edge. The top side 4 of the base iwill slope forwardly and downwardly, terminating in parallel spacedrelation to theircnt edge of the. bottom 2. An upstanding bead 5 will beformed along the front edge of the bottom I,. providing a trough 6between the same and the adjacent edge of the top side 4 for thereception of pencils (not shown).

An inverted- U-shape cover 1 will be formed with an out-turned flange 8along the bottom front edge, while the rear lower edge of the cover iwill be received in an elongated notch 9 formed along the top edge. ofthe back 3', and suitable screw fasteners Hiwill be passed through theflange 8 and the lower edge of the cover 1 into the base i for securingthe cover firmlyin position thereon; An elongated cut-out opening U willbe formed in the top of the inverted U-shape cover I. A sheet of felt 12may be secured to the bottom 2 of the base I for cushioning the same.

A pair of elongated angle plates l3 having inwardly directed upperportions 14 will be suitably attached to the underneath surface of thetop of the. inverted U-shape cover 1, preferably by means of the screwfasteners l5 which will extend through. the elongated and bowed frame Itwhich overlies the opening H in the cover 1 and also holds the elongatedarcuate magnifying glass I! in position over said opening I I.

Depending triangular shaped bearing ears I8 will be formed integrallyupon each angle plate 13, and elongated longitudinally extendingadjusting slots l9 will be formed in each end of the plates I3 forpurposes hereinafter more fully described.

Roller assemblies 20 will be rotatably supported upon the shafts 2| inthe slots l9, and will be held in the desired adjusted position by meansof the nuts 22 threaded on the threaded ends 23 of the shafts 2|.

A sprocket assembly will be supported upon the actuating shaft 24 whichwill be mounted through suitable apertures (not shown) in the bearingears I 8, and an operating knob 25 will be secured to the front end ofsaid shaft 24 for manually rotating the same and the sprocket assembly.The sprocket assembly includes the sprocket 25 having teeth 21 about theperipheral edge and an integrally formed hub portion 28, through whichthe set screw I9 is threaded to contact the shaft 3 24 for locking thesprocket assembly upon the said shaft 24.

Reinforcing plates 30 and 3| will be attached to the opposite sides ofthe sprocket 26 by means of the bolts 32 and nuts 33. A cylindricaldriving tube 34 which includes the section 34' will be welded at 35 tothe peripheral edges of the plates 30 and 3|, and the teeth 21 of thesprocket 26 will extend between the adjacent edges of the tube 34 andsection 34'.

An endless time calculating strip or band 31 is adapted to extend aboutthe roller assemblies 20 and about the cylindrical driving tube 34, andis formed with a series of apertures 36 adjacent and parallel to oneedge thereof for receiving the plates intermediate said guide rollers,and one teeth 21 of the driving sprocket 26 for moving the said strip orband 31 as the operating knob 25 is rotated. The strip or band 31 isprovided with indicia 38 representing hours and indicia 39 representingeach five minutes of each hour, with parallel lines 40 designating eachindicia. An arrow or pointer 4| is printed or otherwise shown on'thestrip or band 31 inwardly of the edge thereof upon which the indicia 38and 39 appear, and five minute contrasting interval indicia 42 areprovided over a two hour portion of said strip or band 31.

A fixed clock strip 43 is supported immediately above the strip or band31 and contains indicia 44 showing the hours of a day and night witheach hour having indicia 45 showing five minute intervals and parallellines 46 leading thereto. In operation, the arrow 4| is set to thestarting time of the workman. If the workman takes thirty-five minutesfor lunch and two ten-minute rest periods, the knob 25 is turned untilfiftyfive (the total lunch and rest periods) is in alignment with thestarting time on the clock strip. By merely reading the clock strip 43at the time the workman stopped Work and following down, the correct netelapsed payable time will be instantly shown.

While the preferred embodiment of the instant invention has beenillustrated and described, it will be understood that it is not intendedto limit the scope of the invention thereto, as many minor changes indetail of construction may be resorted to Without departure from thespirit of the invention.

Having thus described my invention, what I claim as new and desire tosecure by Letters Patent of the UnitedStates is:

of said indicia bearing time card calculating strips being in band formand disposed about said guide rollers and sprocket assembly.

2. The subject matter as claimed in claim 1,

-. and said time card calculating strip in band form having a series ofspaced apertures formed therein engageable with and driven by the teethon said sprocket assembly.

3. The subject matter as claimed in claim 1, said time card calculatingstrip in band form having a series of spaced apertures formed thereinengageable with and driven by the teeth on said sprocket assembly. andmeans for adjusting said guide rollers to take up slack in said timecard calculating band.

4. The subject matter as claimed in claim 1, said time card calculatingstrip in band form having a series of spaced apertures formed thereinengageable with and driven by the teeth on said sprocket assembly, meansfor adjusting said guide rollers to take up slack in said time cardcalculating band, reinforcing plates secured to the opposite sides ofsaid sprocket, and a band supporting cylinder welded to the peripheraledges of said plates.

HERMAN FRANKFURT.

REFERENCES CITED flhe following references are of record in the file ofthis patent:

UNITED STATES PATENTS Number Name Date 235,703 Richardson Dec. 21, 1880484,538 Meyer Oct. 18, 1892 551,520 Yeamans et al. Dec. 17, 1895 925,377Pitkin June 15, 1909 1,088,889 Flavey et a1. Mar. 3, 1914 1,118,950Robinson Dec. 1, 1914

